Many professionals are uncomfortable looking beyond the equipment and duct systems they install, which can affect their service to their customers.

If the repair will be more than 50 percent of the cost of a new system, it is generally best to replace it. However, there may be other factors.

In this month’s troubleshooting situation, you are responding to a restaurant manager’s call for service, and the equipment is a walk-in freezer.

Several attempts have been made to solve the problem of one bedroom that is always too cool during the heating season.

Controls offer many benefits to the design and operation of a system, but they can add a level of difficulty when troubleshooting a system failure.

One of the more popular three-phase electrical services that is supplied to medium-size commercial buildings is the Wye or Star configuration transformer.

The article provided valuable information on maintenance and cleanliness issues related to refrigeration equipment in restaurants and c-stores.

There is a small army of those willing to help technicians provide and maintain the best possible boiler for hydronic systems.

In this month’s troubleshooting situation, the equipment is a four-ton heat pump, and the customer’s complaint is that the unit is blowing cool air.

Replacing a compressor is typically a major investment, so having to return and repair the same issue, or an additional issue, should be avoided.